Gearing for steam or gas turbines



0. A. WIBERG AND G. KARLSS'ON. GEARING FOR STEAM 0R GAS TURBINES.

APPLICATION FILED JUNE 10, 1919.

3 g g 376 Patented Apr. 20, 1920.

MAM, Z

OSCAR ANTGN VI'IBERG AND GEOIRG EARLESSON, GE FINSPGNCT, .SW'EDEN, AEGIS-N935 T SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTRGM,

SWEDEN.

OF FINSPONG'.

GEARING F03. STEAM OR ores TURBINES.

1 0 all whom it may concern:

Be it known that we, Oscar: Anion Winner; and Gross KanLssoN, subjects of the King of Sweden, residents of Finspo ng, Sweden, have invented new and useful improvements in Gearing for Steam or Gas Turbines, of which the following 18 a specification.

This invention to a gearing for the tr 1. mission of power from a steam or turoine of the double rotation type l two shafts ro ing in opposite direc one or two driven shafts, for instance he or tw propeller shafts.

The invention consists, chiefly, in connect ing the two turbine shaft-s through t. thed gears to two intermediate shafts, driiing a common driven shaft or two separate shafts through the intermedium of two reversing gears. By this arrangement a reliable turbine plant is obtained; moreover, reversing gears having small dimensions may be user 1 Several embodiments of the invention are diagrammatically shown in the accompanying drawing. Figures 1, 8, and 7 are longitudinal sections through four embodiments of the invention, respectively. Figs. 2 and 2 are diagrammatic cross sections on the lines AA and 3-13, respectively, of Fig. 1. Figs. at and 1 6 and 6", 8 and 8 show cross sections on the lines .-iA and l3B in Figs. 3, 5 and 7, respectively.

In the embodiment shown in Figs. 1, 2 and 2 the numerals 1 and 2 designate the oppositely rotating shafts of a steam or gas turbine 3 of the double rotating type.

The shaft 1 is connected by means of pinion l secured thereto to two toothed wheels 5, 6 on the shafts 7 and 8, respectively. The shaft 2 which, as stated, rotates in the opposite direction to that, in which the shaft 1 rotates, is connected by means of a pinion 9, secured thereto, to two pinions 10 and 11. The pinion 1O meshes with a toothed wheel 12 on the shaft 7, while the pinion 11 meshes with a toothed wheel 13 on the shaft 8. The two turbine shafts, while rotating in opposite directions, will thus cooperate for driving the shafts 7 and 8, the turbine shafts and the shafts and 8 being through the gearing described operatively connected so as to cause the turbine shafts to rotate Patented Ania 1'50. 1o2ii.

Serial No. 303,218.

in the constructional form shown in Figs.

3, r and l the turbine shaft 1, is connected through the toothed gears 20, 21 to an intermediate shaft the other turbine shaft 2 being connected through the toothed p 22, 23, at to the intermediate shaft 8. i he two intermediate shafts are further interconnected by means of the toothed gears 25, 26, 27 so as to effect an operative connection between the turbine shafts and the intermediate shaft The shafts 7 and S are connected through reversing gears 1 1 and 15, respectively, and the toothed gears 16, 17, 18 to the driven shaft 19, as in the embodiment shown in Fig. 1.

The toothed gearing shown in Figs. 5, 6 and 6 is adapted for the transmission of power to two driven shafts. The turbine shaft 1 is connected through the toothed gears 28, 29, 30 to the intermediate shaft 7 and through the toothed gears 28, 31 to the intermediate shaft 8. The turbine shaft 2 is connected in a similar way through the toothed gears 32, 33 to the intermediate shaft 7 and through the toothed gears 32, 34;, 35 to the intermediate shaft 8. Also in this embodiment an operative connection is effected between the turbine shafts and the intermediate shafts. T he intermediate shafts 7 and 8 are connected through reversing gears 14: and 15, respectively, and toothed gears 36, 37 and 38, 39, respectively, to the driven shafts 10 and 41, respectively.

Figs. 7, 8 and 8 show an embodiment, in which the turbine shaft 1 is connected both to the intermediate shaft 7 and to the intermediate shaft 8, while the turbine shaft 2 is only connected to the intermediate shaft 7 The intermediate shafts 7, 8 carrying the reversing gears 14 and 15, respectively, are in this embodiment connected to a common driven shaft 19, as in the embodiments shown in Figs. 1 and 3.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we ciaim is l. The combination with a steam or gas turbine hzwing oppositely rotating shafts, oi. a pair of intermediate shafts, gears connecting the turbine shafts with the intermediate shafts, a reversing gear mounted on each intermediate shaft, and means for transmitting motion from the reversing gears.

2. The combination with steam or gas turbine having oppositely rotating shafts, a pair of intermediate shafts, toothed "ears for connecting the turbine shafts with the intermediate shafts to form a closed nechanicai interconne-tion ot shafts caus- 1 'ing the turbine shaits to rotate with the same speed independeni'zi y of the power transmitted through one shaft or the other of the transmission shafts, a reversing gear connected with each intermediate shaft, and means for further transmitting power from the reversing gears.

8. T he combination with a steam or gas turbine having oppositely rotating shafts, of

a pair of intermediate shafts, gears connecting each of the intermediate shafts with each of the turbine shafts, 'aQeversing gear connected with each intermediate shaft, and a shaft driven by the reversing gears. 3

The combination with a steam or gas turbine having oppositei rotating shafts, of a pair of intermediate shafts, gears connecting each of the tor-mediate shafts with each of the turbine shafts, a reversing gear connected with each intermediate shaft, means for transmitting motion from each of the reversing gears to a separate dri en shaft.

5. The CO111bi1121t10"1 with turbine having 0' positely of pair of intermeliate shaft gear connecting one of i 1 one or" the intermediate'sh- 1" connecting the remain another, a separate too i. the intermediate shafts with one another reversing gear on'each internieciav e sea and means for further transmitti g from said reversing gears.

in testimony whereof we have signed our names.

OSCA? A1 TON i VIBEEG. GEOEG KARLSSON. 

